Sales Tax: Nexus, Taxable Sales, Exemptions, Collection, Filing, and Compliance
Learn how sales tax generally works for businesses, including nexus, registration, taxable and exempt sales, sourcing, collection, resale certificates, marketplace sales, returns, remittance, recordkeeping, audits, and compliance.
Explore Sales Tax Topics
Start with nexus and registration, then learn how taxable sales, exemptions, rates, collection, filing, and remittance fit together.
Sales Tax Basics
Understand how sales tax works, who collects it, what transactions may be taxable, and how businesses report it.
Read Guide →Sales Tax Nexus
Learn how physical presence, economic activity, employees, inventory, marketplaces, or other connections may create sales tax obligations.
Read Guide →Sales Tax Registration
Understand when registration may be required, how permits work, and why collection should generally begin only when authorized.
Read Guide →Taxable vs Exempt Sales
Learn how product type, service type, customer status, transaction purpose, and jurisdiction can affect taxability.
Read Guide →Sales Tax Rates
Understand how state, regional, local, product-specific, and destination-based rules may affect the rate charged.
Read Guide →Sales Tax Collection
Learn how businesses calculate tax, present it on invoices, collect it from customers, and record the liability.
Read Guide →Taxability and Exemptions
Sales tax treatment may depend on what is sold, who buys it, where the transaction occurs, and whether a valid exemption applies.
Taxable Goods and Services
Understand how jurisdictions classify products, services, digital goods, subscriptions, and bundled transactions.
Explore Taxable Sales →Sales Tax Exemptions
Learn how exemptions may depend on customer type, product use, transaction type, or statutory exemption.
Explore Exemptions →Resale Certificates
Understand how resale documentation can support tax-free purchases intended for qualifying resale.
Explore Resale Certificates →Exemption Certificates
Learn how businesses collect, validate, store, and monitor customer exemption documentation.
Explore Exemption Records →Sales Tax for Modern Business Models
Online selling, marketplaces, remote customers, digital products, and multistate activity can create additional sales tax questions.
E-commerce Sales Tax
Learn how online sales may create registration, sourcing, tax collection, and filing obligations.
Explore E-commerce Sales Tax →Economic Nexus
Understand how sales volume, transaction counts, or other economic thresholds may trigger obligations.
Explore Economic Nexus →Marketplace Facilitator Rules
Learn when a marketplace may collect sales tax and what reporting responsibilities may remain with the seller.
Explore Marketplace Rules →Digital Products and Services
Understand why taxability can differ for software, subscriptions, downloads, streaming, and digital services.
Explore Digital Sales Tax →Essential Sales Tax Guides
Use these guides to understand registration, rates, certificates, filing, audits, and recordkeeping.
How Sales Tax Works
Follow the basic flow from taxable sale to collection, liability, return, and remittance.
How to Register for Sales Tax
Understand the general steps for determining obligation, registration, permits, and filing frequency.
Sales Tax Filing
Prepare returns using reconciled taxable sales, exempt sales, tax collected, adjustments, and payments.
Sales Tax Remittance
Learn how collected sales tax moves from customer transactions to tax authority payments.
Sales Tax Audits
Understand common audit records, reconciliations, exemption support, sampling, and notice response.
Sales Tax Records
Maintain invoices, returns, certificates, payments, transaction details, and reconciliation support.
Sales Tax Compliance Process
Use this general sequence before applying jurisdiction-specific registration rules, rates, forms, and deadlines.
Determine Nexus
Review locations, employees, inventory, sales activity, marketplace activity, and other business connections.
Register and Configure
Obtain required registrations, determine filing frequency, configure tax rules, and document exemptions.
Collect and Reconcile
Calculate tax on taxable sales, record liabilities, compare collected amounts with transaction and accounting records.
File and Remit
Prepare the return, report taxable and exempt sales, remit tax, retain confirmations, and resolve differences.
Key Sales Tax Terms Compared
This table distinguishes common concepts used in sales tax registration, collection, and filing.
| Term | General Meaning | Business Impact | Common Records |
|---|---|---|---|
| Nexus | A connection that may create a sales tax obligation | May trigger registration, collection, and filing | Sales data, locations, inventory, employee records |
| Taxable Sale | A transaction subject to sales tax under applicable rules | Tax may need to be calculated and collected | Invoices, product classifications, transaction data |
| Exempt Sale | A sale not taxed because an exemption applies | May require valid exemption documentation | Certificates, customer records, invoices |
| Sales Tax Collected | Tax charged to customers on taxable transactions | Usually recorded as a liability until remitted | POS reports, invoices, sales tax accounts |
| Remittance | Payment of collected sales tax to the authority | Reduces the sales tax liability | Returns, payment confirmations, tax account records |
Sales Tax Recordkeeping Roadmap
Strong sales tax records support accurate filing, reconciliations, exemption claims, audits, and notice responses.
Record Transaction-Level Tax Data
Keep sale date, customer location, product or service, taxability, rate, tax charged, exemption status, and invoice details.
Maintain Exemption and Registration Records
Store permits, resale certificates, exemption certificates, marketplace reports, and jurisdiction registrations.
Match Sales, Tax, Returns, and Payments
Reconcile sales systems, general ledger accounts, tax collected, filed returns, and remittances.
Store Returns and Supporting Evidence
Retain sales tax returns, payment confirmations, certificates, reconciliations, notices, and audit support.
Not Sure Which Sales Tax Guide You Need?
Start by identifying where you sell, whether nexus exists, what you sell, whether exemptions apply, and which jurisdictions require registration.
Featured Sales Tax Guides
Explore selected guides from the Sales Tax section.
Latest Sales Tax Articles
Read the newest guides about nexus, registration, taxable sales, exemptions, rates, filing, remittance, audits, and records.
Frequently Asked Questions About Sales Tax
Find clear answers to common questions about nexus, registration, collection, exemptions, filing, and compliance.
What is sales tax?
Sales tax is a transaction tax commonly imposed on taxable sales of goods or services. A business may be required to collect it from customers and remit it to a tax authority.
What is sales tax nexus?
Sales tax nexus is a connection between a business and a jurisdiction that may create registration, collection, and filing obligations.
When does a business need to register for sales tax?
Registration may be required when a business meets the jurisdiction's nexus or other registration rules. Exact thresholds and requirements vary.
What is a taxable sale?
A taxable sale is a transaction subject to sales tax under the applicable rules for the product, service, customer, location, and transaction type.
What is a resale certificate?
A resale certificate is documentation used in qualifying situations to support purchasing goods without sales tax when they are intended for resale.
How is sales tax recorded in accounting?
Sales tax collected from customers is generally recorded separately from revenue as a liability until the business remits it to the appropriate tax authority.
How often are sales tax returns filed?
Filing frequency varies by jurisdiction and may depend on sales volume, tax collected, registration status, or other factors.
What records should a business keep for sales tax?
Common records include invoices, transaction details, exemption certificates, resale certificates, returns, payment confirmations, marketplace reports, and reconciliation schedules.
Build a Reliable Sales Tax Process
Determine nexus, register where required, classify taxable transactions correctly, maintain exemption records, reconcile tax collected, file on time, and retain complete documentation.
